Home / 7,620.98-11,431.17-2,938.98

Finding the Fourth Proportional to 7,620.98, 11,431.17 and 2,938.98

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Solution

The fourth proportional to 7,620.98, 11,431.17 and 2,938.98 is: 4,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.98 : 11,431.17 = 2,938.98 : x
  2. Step 2: Convert to fraction form
    7,620.98/11,431.17 = 2,938.98/x
  3. Step 3: Cross multiply
    7,620.98x = 11,431.17 × 2,938.98
  4. Step 4: Simplify right side
    7,620.98x = 33,595,965.31
  5. Step 5: Solve for x
    x = 33,595,965.31/7,620.98
  6. Step 6: Final answer
    x = 4,408.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.